1,861 followers
827 followers
Archaeological sites in #GrandCanyon National Park along the Colorado River are eroding owing to six decades of #GlenCanyon Dam operations #NationalParks #ResearchArticles https://t.co/AGTmfsO84i
2,963 followers
RT @AmyEast_gmph: https://t.co/1QqdSBe6gW, Archaeological sites in Grand Canyon National Park along the Colorado River are eroding owing to…
1,011 followers
RT @AmyEast_gmph: https://t.co/1QqdSBe6gW, Archaeological sites in Grand Canyon National Park along the Colorado River are eroding owing to…